Information theory and computation articles within Nature

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  • Article
    | Open Access

    Many different homogeneous metrics on Lie groups, which may have markedly different short-distance properties, are shown to exhibit nearly identical distance functions at long distances, suggesting a large universality class of definitions of quantum complexity.

    • Adam R. Brown
    • , Michael H. Freedman
    •  & Leonard Susskind

  • Article
    | Open Access

    Attitude can be extracted from optic flow when combined with a motion model that relates attitude to acceleration direction, which leads to stable flight attitude control with slight oscillations due to unobservable conditions.

    • Guido C. H. E. de Croon
    • , Julien J. G. Dupeyroux
    •  & Franck Ruffier

  • Article |

    A mechanical integrated circuit material based on Boolean mathematics and reconfigurable electrical circuits is created to demonstrate scalable information processing in synthetic, engineered soft matter.

    • Charles El Helou
    • , Benjamin Grossmann
    •  & Ryan L. Harne

  • Article
    | Open Access

    Gaussian boson sampling is performed on 216 squeezed modes entangled with three-dimensional connectivity5, using Borealis, registering events with up to 219 photons and a mean photon number of 125.

    • Lars S. Madsen
    • , Fabian Laudenbach
    •  & Jonathan Lavoie

  • Article |

    The concept of neuromorphic completeness and a system hierarchy for neuromorphic computing are presented, which could improve programming-language portability, hardware completeness and compilation feasibility of brain-inspired computing systems

    • Youhui Zhang
    • , Peng Qu
    •  & Luping Shi

  • Letter |

    Image reconstruction is reformulated using a data-driven, supervised machine learning framework that allows a mapping between sensor and image domains to emerge from even noisy and undersampled data, improving accuracy and reducing image artefacts.

    • Bo Zhu
    • , Jeremiah Z. Liu
    •  & Matthew S. Rosen

  • Review Article |

    The leading proposals for converting noise-resilient quantum devices from memories to processors are compared, paying attention to the relative resource demands of each.

    • Earl T. Campbell
    • , Barbara M. Terhal
    •  & Christophe Vuillot

  • Letter |

    Spoken-digit recognition using a nanoscale spintronic oscillator that mimics the behaviour of neurons demonstrates the potential of such oscillators for realizing large-scale neural networks in future hardware.

    • Jacob Torrejon
    • , Mathieu Riou
    •  & Julie Grollier

  • Review Article |

    Quantum technology enables new methods for generating of randomness with minimal assumptions, certified by the violation of a Bell inequality, which opens up new theoretical and experimental research directions and leads to new challenges.

    • Antonio Acín
    •  & Lluis Masanes

  • Letter |

    The splitting of zero-energy Majorana modes in a tunnel-coupled InAs nanowire with epitaxial aluminium is exponentially suppressed as the wire length is increased, resulting in protection of these modes; this result helps to establish the robust presence of Majorana modes and quantifies exponential protection in nanowire devices.

    • S. M. Albrecht
    • , A. P. Higginbotham
    •  & C. M. Marcus

  • Article |

    Quantum computing promises advantages over classical computing for certain problems; now ‘quantum contextuality’ — a generalization of the concept of quantum non-locality — is shown to be a critical resource that gives the most promising class of quantum computers their power.

    • Mark Howard
    • , Joel Wallman
    •  & Joseph Emerson

  • Letter |

    An exactly solvable information-theoretical model of communications with a fully quantum electromagnetic field yields explicit expressions for all point-to-point capacities—the maximum possible rates of data transmission—of noisy quantum channels, with implications for quantum key distribution and fibre-optic communications.

    • Graeme Smith
    •  & John A. Smolin

  • News & Views |

    By harnessing the quantum nature of light and guiding the light through a network of circuits integrated in a glass chip, it is possible to mimic fundamental particles undergoing a quantum walk.

    • Jonathan C. F. Matthews
    •  & Mark G. Thompson

  • News & Views |

    Quantum correlations have long been recognized as an informational resource for quantum communication and computation. It now seems that they can also do physical work. See Letter p.61

    • Patrick Hayden

  • News |

    Successes at entangling three-circuit systems brighten the prospects for solid-state quantum computing.

    • Eugenie Samuel Reich

  • News & Views |

    A study of failures in interconnected networks highlights the vulnerability of tightly coupled infrastructures and shows the need to consider mutually dependent network properties in designing resilient systems.

    • Alessandro Vespignani

  • Letter |

    The Dirac equation successfully merges quantum mechanics with special relativity. It predicts some peculiar effects such as 'Zitterbewegung', an unexpected quivering motion of a free relativistic quantum particle. This and other predicted phenomena are key fundamental examples for understanding relativistic quantum effects, but are difficult to observe in real particles. Here, using a single trapped ion set to behave as a free relativistic quantum particle, a quantum simulation of the one-dimensional Dirac equation is demonstrated.

    • R. Gerritsma
    • , G. Kirchmair
    •  & C. F. Roos

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